What are the drums on the back of tanks?

A steel tongue drum can be made from an empty (often 20lb) propane tank. The tank is flipped over, the base cut/knocked off; and seven to ten tongues are cut radially into the bottom of the tank, forming the top of the instrument.

What is that thing on the barrel of a tank?

A bore evacuator or fume extractor is a device which removes lingering gases and airborne residues from the barrel of an armored fighting vehicle’s gun after firing, particularly in tanks and self-propelled guns.

Why do tanks have long barrels?

The biggest advantage that they provided was that they were consistently more accurate than tanks with smooth-bore guns. This is because the rifling inside the barrel spins the shell as it is fired, stabilizing it and making it more accurate. Nowadays, the better cannons are generally the ones that are smooth-bore.

Why do tanks have barrels on the back?

So much was done to manage the force and accuracy of the big tank guns. One of the first things added was the muzzle brake (or in the UK; barrel brake). The first reason was to direct the force of the expanding gases to the rear. This was done to counter the violent recoil that many guns had.

Why is it called a tongue drum?

The steel tongue drum gets its name from the slits cut into the steel to produce the notes. They are very much tongue-like in shape. Each tongue is unique in length, width, and depth in order to create different notes when struck by a finger or mallet when played.

What shoots out of a tank?

A tank gun is the main armament of a tank. Modern tank guns are large-caliber high-velocity guns, capable of firing kinetic energy penetrators, high explosive anti-tank, and cannon-launched guided projectiles. Tank guns generally use self-contained ammunition, allowing rapid loading (or use of an autoloader).

What is the thick part on a tank barrel?

Originally Answered: What is the bulge in the middle of a tank barrel? The bulge is a fume evacuator that prevents leftover propellant gases from flowing into the tank when the breech is opened.